Fixing the Ecoboost - Overheating - EP5: Full Race Transmission Cooler 

hey, check out my towing test video. it should give you a pretty good idea of the impact of these mods: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-nV5k5mjiqJ8.html

I imagine it would. It's a drop in replacement for the OEM one. And I doubt Ford has a different trans cooler for the 5.0 vs the 3.5. you could always reach out to them to confirm. I have always found them very helpful

You can get the kit from Full Race Motorsports

Yes you will need to add extra fluid. They recommend just putting the extra in the regular oil cap and then cycling the engine with your foot on the gas to build oil pressure. With your foot on. The gas for some cars, it does not start

2013. This should apply to atleast 11-14